KR100676437B1 - The Apparatus of Supplying Washing Water - Google Patents

Abstract

The present invention relates to a sterile washing water supply device suitable for use in restaurants, hospitals, and the like, which is a public health problem. The present invention provides a portable storage container formed of hydrochloric acid and chlorite or hypochlorite and having a high concentration of an aqueous solution having an effective chlorine concentration of 3,000 ± 1,000 ppm at a pH of 5 to 7 and a flow path into which tap water is introduced; A negative pressure chamber in communication with the flow path, the negative pressure chamber being negative pressure accompanying the flow amount due to the flow of tap water; A pipe connected to the negative pressure chamber to suck the high concentration aqueous solution from the portable storage container; While communicating with the negative pressure chamber and on the other hand, when the negative pressure of the negative pressure chamber becomes a certain value or more, the negative pressure regulating valve and the downstream side of the flow path and blow the air from the outside, and the high concentration aqueous solution and tap water sucked by the negative pressure chamber It comprises a dilution chamber for stirring and mixing and aspirates the high concentration aqueous solution with the flow of tap water, characterized in that consisting of a dilution device for diluting 30 to 100 times.

According to the present invention, sufficient hydrochloric acid and sodium chlorite or sodium hypochlorite, which are acceptable as food additives, are sufficiently diluted to 30 to 100 ppm in a pH range of pH 5 or higher, or pH 5.2 or higher, but lower than 7, preferably 6.5 or lower. As a safe and sterilizing sterilizing water, it can be easily sterilized and cleaned in restaurants, clinics and homes.

Sterilization wash, hydrochloric acid, sodium hypochlorite, faucet, washing water, sterilizing water

Description

The Apparatus of Supplying Washing Water

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a state in which a dilution device for diluting 30 to 60 times is mounted on a faucet for carrying out the sterilization cleaning method of the present invention.

2 is a cross-sectional view of the dilution device used in the present invention.

<Description of the symbols for the main parts of the drawings>

1: faucet 2: dilution device

3: concentrated aqueous solution pack 4: hose

The present invention relates to a sterile washing water supply device suitable for use in restaurants, hospitals, and the like, which is a public health problem.

In general, detergents are generally used for washing food and dishes in restaurants, but there is a limit in sterilization effect. Although it is proposed to form washing water using an oxidizing agent such as chlorine gas or ozone gas, it requires a large apparatus and is not suitable for use in small restaurants and homes.

Also, in recent years, problems with pathogens such as SARS and bird flu have emerged, and in particular, in summer, pathogens such as O-157 bacteria are remarkable, which is harmful to the body in washing food, tableware and fingers. It is desired to provide sterile rinse water that is free.

According to the related art of the Republic of Korea Utility Model Registration No. 0221311 (pedal type automatic hand sterilizer; Announcement 2001.4.16), in one main body to form a water outlet connected to the water supply pipe, and a disinfection water outlet connected to the disinfection water filling container In the water supply pipe, an electronic valve is formed. In the disinfection water filling container, a D / C pump is formed, and these are organically connected to each of the water supply pedal and the disinfection water supply pedal equipped with a limit switch at the bottom of the main body, and the foot pedal is selected by stepping on the foot. Tap water or disinfectant water is automatically discharged through the water outlet and the disinfection water outlet so that the two functions of automatic water washer and automatic sterilizer are simultaneously disclosed. However, such a technique has a problem in that the sterilizing water is forced to be discharged by pressing the pedal every time the tap water is used, and the sterilizing water is not evenly diluted in the tap water.

An object of the present invention for solving the problems of the prior art as described above is to provide a sterilizing washing water supply device that can easily provide sterilizing washing water even in restaurants and homes.

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The sterilizing washing water supply device of the present invention for achieving the above object is formed of hydrochloric acid and chlorite or hypochlorite, and a portable storage container housed in a high concentration aqueous solution set to an effective chlorine concentration of 3,000 ± 1,000 ppm at pH 5 or more and less than 7 And, a flow path through which tap water is introduced; A negative pressure chamber in communication with the flow path, the negative pressure chamber being negative pressure accompanying the flow amount due to the flow of tap water; A pipe connected to the negative pressure chamber to suck the high concentration aqueous solution from the portable storage container; While communicating with the negative pressure chamber and on the other hand, when the negative pressure of the negative pressure chamber becomes a certain value or more, the negative pressure regulating valve and the downstream side of the flow path and blow the air from the outside, and the high concentration aqueous solution and tap water sucked by the negative pressure chamber It comprises a dilution chamber for stirring and mixing and aspirates the high concentration aqueous solution with the flow of tap water, characterized in that consisting of a dilution device for diluting 30 to 100 times.

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Hereinafter, with reference to the accompanying drawings it will be described with respect to the sterilizing washing water supply apparatus of the present invention.

Fig. 1 is a perspective view of the present invention when used as washing water for a restaurant, and the tap 1 of the tap water is equipped with a dilution device 2 capable of diluting 30 to 100 times.

The 20-liter pack 3 contains an aqueous solution adjusted to an effective chlorine concentration of 3000 ± 1000 ppm, including sodium chlorite or sodium hypochlorite and hydrochloric acid, and adjusted to pH 5 or more and 7 or less by hydrochloric acid. The 20 liter pack 3 is connected to the dilution apparatus 2 attached to the faucet 1 by the hose 4, and the concentrated hypochlorous acid water is aspirated by the outflow of tap water, and it mixes and dilutes it with tap water.

On the other hand, in adjusting the aqueous solution of the above concentration using hydrochloric acid and sodium chlorite or sodium hypochlorite, it is necessary to be careful that the pH is too low when hydrochloric acid is added so that chlorine gas is not generated. Therefore, an aqueous solution of a predetermined high effective chlorine concentration, while adjusting the pH using a pH adjuster, particularly 1 to 10% of a liquid containing potassium hydrogen carbonate or sodium salt, which is acceptable for food addition, before and after the addition of hydrochloric acid. It is desirable to adjust.

2 is a cross-sectional view showing the internal structure of the dilution device 2, wherein the main body 20 has a flow path 21 of tap water, and a pipe diameter than the flow path 21 via a taper portion 22 on the downstream side. This small small diameter part 23 is formed, and the large diameter part 24 is formed downstream, and is connected to the said dilution chamber 25 downstream. A collision rod 25a is traversed in the dilution chamber in the radial direction, and a spiral groove 25b is formed in the side wall. The discharge pipe 26 is formed in the lower end of this dilution chamber 25.

The main body 20 is provided with connecting pipes 27 and 28 extending in the horizontal direction, and a chemical liquid supply hose 4 is connected to the first connecting pipe 27. On the other hand, the negative pressure regulating valve 29 is connected to the second connecting pipe 28, and communicates with the outside via the leak hole 30, and is normally closed by the valve body 31. The first and second connecting pipes 27 and 28 communicate with and open to the large diameter portion 24 of the main body, respectively.

Therefore, the water supplied to the flow path 21 is accelerated as it flows into the small diameter part 23 from the taper part 22, and produces negative pressure in the boundary line with the small diameter part in the large diameter part (negative pressure chamber) 24. As shown in FIG. By this negative pressure, the chemical | medical solution is attracted from the 1st connection pipe 27 via the hose 4, and is led to the large diameter part 24. As shown in FIG. The chemical liquid enters the dilution chamber 25 together with the tap water, and after colliding with the collision rod 25 ??, swirls in the spiral groove 25b of the side wall, is uniformly diluted, and flows out of the discharge tube 26.

Negative pressure is generated in the large diameter portion 24 in accordance with the flow rate of the tap water from the small diameter portion 23, but when the negative pressure becomes a predetermined value or more, the valve body 31 of the negative pressure regulating valve 29 falls from the leak hole 30, Air is introduced from the air to reduce the negative pressure. Therefore, although the chemical | medical solution from the 1st connection pipe 27 is normally set to 50-60 times dilution, the fluctuation amount can maintain about +/- 10 times without large fluctuation | variation.

The dilution magnification can be determined from the relationship between the chemical liquid supply amount from the first connecting pipe 27 and the negative pressure adjustment value of the negative pressure regulating valve 29. In order to detect the occurrence of abnormality in dilution, it is preferable to detect the effective chlorine concentration in the dilution water adjusted in the dilution chamber 25, and to provide a sampling chamber for sampling the dilution water discharged from the dilution chamber 25. A detector (e.g., conductivity meter) for measuring the effective chlorine concentration of the pooled dilution water can be installed in the sampling chamber. In that case, a pH meter may be used together.

Example 1

In FIG. 1, tap water is discharged from the tap, and the concentrated solution of sodium hypochlorite (effective chlorine concentration of 3,000 ppm) of hydrochloric acid pH 5.5 is sucked from the pack 3 and diluted by 50 times. The diluted aqueous sodium hypochlorite solution shows an effective chlorine concentration (hypochlorite concentration) of 60 ppm at approximately pH 5.82.

Since the sterilized wash water diluted 50-fold is supplied from the dilution apparatus 2, it is possible to form 1,000 liter of diluted sterilized wash water from 20 liter of concentrated aqueous solution. This amount is sufficient as the amount of washing water used in a small restaurant per month.

The sterilization ability of the wash water diluted 50-fold with tap water was examined as follows. The finger of the examination during the operation was pressed firmly on the hand stamp badge, the hand was then washed with tap water equipped with the dilution device, and the finger was pressed firmly on the hand stamp badge. In the culture photographs before and after the cleaning, the bacteria grew before the washing but almost did not grow after the washing.

Example 2

Staphylococcus aureus (mechi published sensitivity) to the third 1㎖ ㅧ 10 ⁶ including bacterial solution is created, collected the bacterial solution to pH 1㎖ is effective chlorine concentration of 5.82 (the concentration of sodium hypochlorite) was added to 9㎖ 60ppm 10 times that Diluted. As a result of measuring the number of bacteria after 1 minute, it was 3x10 or less.

Example 3

Dilution water showing an effective chlorine concentration (hypochlorite concentration) of pH 5.92 and 50 ppm was obtained in the same manner as in Example 1 except that 60-fold dilution water was formed using the apparatus of FIG. This dilution water was used for the washing water to examine the bactericidal properties, but the same results were obtained in Examples 1 and 2.

Example 4

Dilution water showing a free chlorine concentration (hypochlorite concentration) of pH 5.5 and 100 ppm was obtained in the same manner as in Example 1 except that 30-fold dilution water was formed using the apparatus of FIG. This dilution water was used for the washing water to examine the bactericidal properties, but the same results as in Examples 1 and 2 were obtained.

Example 5

Dilution water showing an effective chlorine concentration (hypochlorite concentration) of pH 5.9 and 30 ppm was obtained in the same manner as in Example 1 except that 100-fold dilution water was formed using the apparatus of FIG. This dilution water was used for the washing water to examine the bactericidal properties, but the same results as in Examples 1 and 2 were obtained.

Comparative example

1) Aqueous solution of sodium hypochlorite in hydrochloric acid with pH 5.2 and effective chlorine concentration of 57 ppm (23 ??)

2) Effective concentration 0.05% benzalkonium chloride aqueous solution

3) The viable cell count of the test water when various test bacteria were added to each of the sodium hypochlorite aqueous solution of 200 ppm of effective concentration was examined, and the result shown in following Table 1 was obtained.

As shown in Table 1, it can be seen that the aqueous solution of sodium hypochlorite of hydrochloric acid shows excellent sterilizing ability.

The number of live bacteria of test water when we added test bacteria Test bacteria Sample 1 Addition bacteria Number of bacteria per 1ml 1 minute later 2 minutes later 3 minutes later Lancet One) 1.6 × 10 ⁶ <10 <10 <10 2) 1.9 × 10 ⁶ <10 <10 <10 3) 1.9 × 10 ⁶ <10 <10 <10  Bacillus subtilis (apo) One) 4.6 × 10 ⁶ 3.7 × 10 ⁶ <10 <10 2) 4.9 × 10 ⁶ 4.2 × 10 ⁶ 4.3 × 10 ⁶ 4.2 × 10 ⁶ 3) 4.9 × 10 ⁶ 4.4 × 10 ⁶ 4.5 × 10 ⁶ 4.5 × 10 ⁶  Candida One) 2.3 × 10 ⁶ <10 <10 <10 2) 2.3 × 10 ⁶ 2.5 × 10 ³ <10 <10 3) 2.3 × 10 ⁶ <10 <10 <10  Soil yeast mold One) 2.0 × 10 ⁶ <10 <10 <10 2) 2.0 × 10 ⁶ 2.0 × 10 ² <10 <10 3) 2.0 × 10 ⁶ 2.0 × 10 ⁵ <10 <10  Escherichia coli One) 4.3 × 10 ⁶ <10 <10 <10 2) 4.3 × 10 ⁶ <10 <10 <10 3) 4.3 × 10 ⁶ <10 <10 <10  Staphylococcus aureus One) 4.5 × 10 ⁶ <10 <10 <10 2) 4.5 × 10 ⁶ <10 <10 <10 3) 4.5 × 10 ⁶ <10 <10 <10  MRSA One) 3.4 × 10 ⁶ <10 <10 <10 2) 3.4 × 10 ⁶ <10 <10 <10 3) 3.4 × 10 ⁶ <10 <10 <10  Salmonella One) 3.4 × 10 ⁶ <10 <10 <10 2) 3.4 × 10 ⁶ <10 <10 <10 3) 3.4 × 10 ⁶ <10 <10 <10  Pseudomonas aeruginosa One) 1.6 × 10 ⁶ <10 <10 <10 2) 1.6 × 10 ⁶ <10 <10 <10 3) 1.6 × 10 ⁶ <10 <10 <10

According to the present invention, sufficient hydrochloric acid and sodium chlorite or sodium hypochlorite, which are acceptable as food additives, are sufficiently diluted to 30 to 100 ppm in a pH range of pH 5 or higher, or pH 5.2 or higher, but lower than 7, preferably 6.5 or lower. Can be cleaned with safe and sterilizing sterile washing water.

In addition, the user can dissolve an appropriate amount of hydrochloric acid and sodium chlorite or sodium hypochlorite by tap water to prepare a concentrated solution of predetermined sodium hypochlorite, but it is not only cumbersome but also mixes hydrochloric acid, sodium chlorite and sodium hypochlorite. It is dangerous to do this at home or in restaurants. However, we found a method that can maintain stable concentration of effective chlorine concentration of 3000 ± 1000ppm at pH 5 or more and less than 7 for more than 1 month. A weakly acidic pH of 5 or more, or pH 5.2 or more and 7 or less, preferably washing water having sufficient sterilization power diluted to 30 to 100 ppm in a range of 6.5 or less can be easily provided.

In addition, at home, in a restaurant, in a hospital, and the like, washing water capable of killing various pathogens safely without harming the body can be easily provided.

As described above, according to the present invention, it is possible to safely and easily sterilize and clean, and to easily realize household, restaurant, and hospital sterilization.

Claims (7)

delete delete A portable storage container formed of hydrochloric acid and chlorite or hypochlorite and containing a high concentration aqueous solution having an effective chlorine concentration of 3,000 ± 1,000 ppm at a pH of 5 to 7; And A flow passage through which tap water flows, a negative pressure chamber communicating with the flow passage and becoming a negative pressure accompanying the flow amount due to the flow of tap water, and a pipe connected to the negative pressure chamber to suck the high concentration aqueous solution from the portable storage container; While communicating with the negative pressure chamber, while communicating with the outside, when the negative pressure of the negative pressure chamber becomes a predetermined pressure or more, a negative pressure regulating valve for blowing air from the outside, and a high concentration aqueous solution and tap water positioned downstream of the flow path and sucked by the negative pressure chamber. Sterilizing and washing water supply apparatus comprising a dilution chamber for stirring and mixing; and a dilution apparatus for sucking the high concentration aqueous solution with dilution of 30 to 100 times with the flow of tap water. delete delete delete delete

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